/Engine/Plugins/Runtime/Metasound/Source/MetasoundFrontend/Public/MetasoundAssetManager.h
Returns asset associated with the given key (null if key is not registered with the AssetManager or was not loaded from asset)
[FMetasoundAssetBase](API\Plugins\MetasoundFrontend\FMetasoundAssetBase) * TryLoadAssetFromKey ( const [Metasound::Frontend::FNodeRegistryKey](API\Plugins\MetasoundFrontend\FNodeRegistryKey) & InRegistryKey ) const